Air brush



W. F. ROTHERMUND.

AIR BRUSH.

APPLICATION FILED MAR, 15, 192:.

Patented Sept. 1 9, 1922.

Patented Sept. 39, 19220 errata? area" AIR BRUSH.

Application filed March 15, 1921. Serial No. 452,544.

To all whom it my amtcern:

Be it known that I, WERNER F. Ro'rHnR- MUND, a citizen of the UnitedStates, and a resident of the borough of Brooklyn, city of New York,county of Kings, State of New York, have invented a certain new anduseful Improvement in Air Brushes, of which the following is aspecification.

This invention relates to air brushes and re more particularly to thetype of air brushes which are adapted to apply lacquers, varnishes,etc., by the use of compressed air.

One object of the invention is to provide an air brush with a novel andimproved construction by which the handle and valve are adjustably anddetachablymounted on the cover of the jar which contains the lacquer orvarnish.

Another object of the invention is to pro- 2@ vide a novel and improvedair brush of the nature specified which is simple in construction,economical to manufacture and easy to manipulate.

Further objects of the invention are to provide a novel and improved airbrush of the nature specified in which the valve is so placed as topermit of its easy operation by the thumb of the operator, and havingthe handle or hand piece so positioned and of to such length as to actas a support for the apparatus and thereby prevent it being upset by theweight of the air hose.

Other objects and advantageous features including certain novel detailsof the invention will be apparent to those skilled in the art, from acareful consideration'of the description and claims of my inventionwhich I have illustrated in the accompanying drawings in which:

Figure 1 is a side elevational view of the improved air brush with theparts assembled. Figure 2 is a central longitudinal section through thevalve on a larger scale. Figure 3 is a top plan view on a smaller scalethan Figure 1 of the air brush with part of the handle cut away. Figure4 is a perspective view from the side opposite to that shown in Figure1, of the valve and the attached resilient gripping fingers in detail,

W with the handle left ofi. Figure 5 is a sectional view taken at thedotted line 55 of Figure 4 looking in direction of arrows, drawn in thesame scale as Figure 1.

The glass jar or other suitable container 10 has screwed or'otherwisedetachably secured thereon a cap or cover 11. The latter has fixedthereon a pipe or duct 12 which extends downwardly into the container 10to convey the lacquer or varnish from the container to the nozzle 13,the latter of which is adjustably secured by screw threads to the upperend of pipe 12.

On the cover 11 is securely attached by means of fixed brackets 14 asubstantially horizontal tube 15 formed at one end to comprise anorifice 16 slightly smaller in diameter than the bore 17 of said tube,and at the other end an enlarged or shouldered end iece 18 said endpiece being bored to approximately the same diameter as the exterior ofa nlpple 29 and forming a socket therefor. The aforesaid tube isdisposed in a manner relative to pipe 12 as to permit a current of airwhich may be forced through tube' 15 to pass directly across the tip ofnozzle 13, thereby causing a vacuum in pipe 12, said vacuum allowing theatmospheric pressure in the container to force the liquid up through thepipe to be atomized by said air current. In the cover 11 is formed ahole or vent 18 to permit of atmospheric pressure upon the liquid incontainer 10.

The valve preferably consists of a hollow bodyor barrel 19, having ascrew cap 20, packing 21, a valve 22, a valve seat 23, a valve stem 24,and a finger piece 25 on said valve stem. The valve 22 is held in itsnormally closed position by a spring 26. The lower closed portion of thebody 19 has firmly fixed therein a threaded stud or screw 27, having abent or offset portion formed at an angle of approximately 30 degreesfrom its shank, upon which is fastened a handle or hand piece 28, madepreferably of wood and of such length that when the apparatus is placedupon a fiat surface the lower portion of said handle will rest upon thatsurface (as. shown by broken lines in the drawings), and act as a propor support for the whole structure, thereby overcoming the tendency ofthe attached hose or tube (not shown) of the air supply, by its weight,

bevelled at the'end to permit of its being readily seated in the endpiece 18, and also being accurately fitted to the bore of the end piece18. Below the valve and valve seat on the exterior of the body 19 andintegral with the same, is fixed an air inlet or nipple 30,substantially at right angles to the nipple 29 and having corrugationsto firmly hold a. hose or flexible tube slipped over the same.

Assuming that the valve 22 is opened by the finger piece 25 beingpressed down, it is manifest that a current of air coming from thesupply tube will pass through the opened valve 22 through tube 15,issuing from the orifice 16 and across the tip of the nozzle 13 andcause the liquid in the'container' to rise and be blown away as a spray.

Partly surrounding and extending laterally from the lower ortion of thebody 19, and firmly aflixed t ereto as by means of soldering or weldingare the spring clips or resilient gripping fingers 31, bent in at 32,

of the clips on the cover. that the said units can also be quickly andat which point there is placed an adjusting screw 33, to. permitofdrawing the clips closer together, thereby increasing the tension. Saidclips are preferably made of spring steel and are so formed as toclosely fit around and firmly grip the cover or cap 11 at its peripherywhile the adjacent beads or ribs 34: and 35 on said cover prevent anylateral motion of the clips when in position on the cover. The clips 31are flared out at 36 to permit the same being readily positioned on thecover by being thrust against said covers periphery. v

It will be readily seen that the construction and arrangement of theparts are such as to permit the container 10 together with the cover 11including the fixed parts on the cover to be easily and quickly broughtinto effective relation with the'valve and air supply, by merelythrusting the spring clips 31 against the periphery of the cover lluntil the nipple 29 has been seated in the end piece .18. The two unitswillthen be rigidly and securely held together without any possibih ityof becoming shifted or dislocated during operation. The beads or ribs341- and 35 on the cover 11 act as lateral] guides for the clips 31while they are being positioned, and furthermore, assist in keeping saidclips firmly in position on said cover. The nipple 29 being deeplyseatedin endpiece 18 also assists. in holding the two units firmly together bypreventing any rotary movement It is apparent easily separated by merelypulling them apart. I

The position of the air inlet or nipple 30 is such that the attached airhose will not interfere with the apparatus being set upon a bench ortable as would be the case were the hose connected to the lower portionof the handle; also, that the various "parts are of light constructionso as not to make the whole device top heavy and cumbersome or liable tobeing upset. it is obvious that the parts of the unit comprising thecontainer 10, cover 11, pipe 12, tube 15 and brackets 14, etc., are sofew and simple in construction and so economical to manufacture as to,permit the use of individual jars with their attached covers andassociated parts, for numerous or various lacquers, varnishes andliquids colored and uncolored; thereby preventing evaporation andfurther preventing the contamination of one liquid with another whichwould result by changing the contents of a single container; also thatonly one unit comprising. the valve, clips and handle is necessary whichcan be quickly changed from one jar to another without disconnecting theair hose, thereby saving the time of the operator as well.

lit will be understood that this last mentioned unit can be used withany other suitable form of spraying mechanism mounted onthe cover, alsothat any other suitable construction of valve may be used in con nectionwith the clips and hand piece.

Variations may be resorted to within the scope of the invention andportions of the improvements may be used without others.

Having thus described my invention, ll claim 1. In an air brush thecombination with a container, of 'a' removable cover therefor, a

mounted on the cover and positioned to de-- liver a stream of air aboveand across the nozzle of said vertical tube, a valve associated with ahandle, said valve having interlocking means with said horizontal tubeand means on the valve to frictionally engage the cover to hold thevalve in fixed relation with said horizontal tube.

3. In an air brush comprising a container, a removable cover therefor, avertical and loo- MPH:

lllltll a horizontal tube having fixed relation with said cover, saidhorizontal tube being formed to comprise a socket, a valve having abandie and portion adapted to fit within said socket, and other meansassociated with the valve for frictionally engaging the periphery of thecover to hold said valve in fixed relation with said cover and saidhorizontal tube.

' 4. in an air brush comprising a container, a removable cover therefor,a vertical and a horizontal tube associated with said cover adapted todeliver the contents of said oontainer in the form of a spray, a valveassociated with a handle, an outlet and an inlet portion on the valve,said outlet portion adapted to interlock with said horizontal tube andan adjustable resilient member associated with said valve and saidhandle to frictional 1y engage the cover to hold said valve and handlein fixed relation therewith.

5. In an air brush comprising a container,

' a removable cover therefor, a vertical and a horizontal tubeassociated with said cover,

' said valve, said horizontal tube being formed at one end to receivethe outlet portion on said valve, guiding means on the periphery of saidcover for bringing the valve and its associated parts into fixedrelation with said cover and other means associated with the valve forholding said valve in fixed relation with the cover.

6. In an air brush comprising a container, a removable cover therefor,said cover having guiding means for bringing the valve and associatedparts into fixed relation with the cover, a vertical and a horizontaltube having fixed relation with said cover, said horizontal tube beingformed to comprise a socket, a valve having a handle and a portionadapted to fit within said socket, and other means associated with thevalve for holding said portion on the valve in fixed relation with thesocket and said horizontal tube.

7. In an air brush comprising a container, a removable cover therefor,said cover having annular ribbed portions to act as guiding means forbringing a valve and its associated parts into fixed relation with thecover, a vertical and a horizontal tube having fixed relation with saidcover, said horizontal tube being formed to comprise a socket, a valvehaving a handle and a portion adapted to fit within said socket, andother means associated with the valve for holding said valve in fixedrelation with the cover.

8. in an air brush comprising a container,

a removable cover therefor, said cover having annular ribbed portions, avertical and a horizontal tube having fixed relation with 9. In an airbrush comprising a container,

a removable cover therefor, said cover having annular ribbed portions, avertical tube having a nozzle, a horizontal tube having an enlarged endportion formed to comprise a socket, both tubes having fixed relationwith said cover, a valve having a portion adapted to fit within a socketon above mentionedhorizontal tube, an inlet and an outlet nipple on thevalve, means for manually operating the valve, a handle in fixedrelation with the valve, resilient fingers ailixed to said valve adaptedto irictionally engage the cover and to hold the same with itsassociated parts in fixed relation with the valve. a

10. In an air brush comprising a container, a removable cover thereforhaving peripheral ribbed portions, a vertical and a horizontal tubehaving fixed relation with the cover, both tubes disposed in a manner onsaid cover so as to cooperate in delivering a liquid from the containerin the form of a spray, an enlarged end portion on the horizontal tubeformed to comprisea socket, a valve having an inlet and'anoutletportion, said outlet portion adapted to lit-within the socket of thehorizontal tube, spring clips in fixed relation with the valve adaptedto act in conjunction with peripheral ribbed portions on the cover infrictionally holding the valve audits associated parts in effectiverelation with means on said cover for spraying a liquid from thecontainer operating means for said valve, a handle on the valve adaptedto act as a support for the container.

11. In an air brush comprising a container, a removable cover thereforhaving annular ribbed portions, a vertical and a horizontal tube havingfixed relation with the cover, said vertical and horizontal tubesadapted to spray a liquid in the container by means of air passingthrough said horizontal tube, a socket formed on the horizontal tubeadapted to interlock with an outlet portion on a valve. a normallyclosed and manually operated valve, an inlet and an outlet portion onthe valve, resilient clamps in fixed relation with the valve forfrictionally holding the valve and its associated parts in effectiverelation with the cover. means for adjusting the tension on theresilient clamps, a handle on the valve adapted to form a support forthe container to stabilize the same.

12. In an air brush comprising a con- Zllll tainer, a removable covertherefor, having said annular ribbed portions to hold the annular ribbedportions, means associated outlet portion on said valve in efiective no10 with said cover adapted to deliver theconlation with said sprayingmeans.

tents of said container in the form of a Signed at Brooklyn in thecounty of spray, of a valve secured to a handle, an Kings and Stateof-New York this 14th day inlet and an outlet portion on said valve ofMarch A. D. 1921. I

and means associated with said valve for Y frictionally engaging-thecover adjacent to WERNER l. RQTHERMUND,

